Valve for wells



H. KRATZER VALVE FOR WELLS Feb. 23, 1932.

Filed Aug. 12, 1931 2 Sheets-Sheet l A w m k3 fi kiwzaia ffimizeg'ATTORNEY H. KRATZER VALVE FOR WELLS Feb. 23, 1932.

Filed Aug. 12, 1931 2 Sheets-Sheet 2 15 ef'irzafz ATTORNEY ac tions sothat Patented Feb. 23, 1932 UNITED STATES nu mm, or morons,

venvn roe Application filed August 1a, 1981. Serial no. seams.

sults in the saving of the oil or gas and which 10 will prevent fireswhich frequently occur in such instances.

To the attainment of the foregoing the invention consists in theimprovement hereinafter described and definitely claimed.

In the drawings:

Figure 1 is a top plan view of the unprovement.

Figure 2 is a sectional view approximately on the line 2-2 of Figure 1.

20 Figure 3 is a face view of the improvement.

Figure 4 is a sectional view approximately on the line 4-4 of Figure 2.

Figure 5 is an inner face view of one of the members constituting theimprovement.

Figure 6 is a plan view of the stationary plate or valve member.

Figure 7 is a similar view of a movable plate or valve member.

My improved device is constructed in seethe same can be easily andquickly clamped around a well casin 1 and the coupling 2 on the upperend t ereof. The device is, of course, esigned for use above ground andthe same can be arranged on one of the casingusections withoutmterfering with the d g operation when the valve plates are remove fromthe body of the improvement. The body of the improvement comprises twosemi-cylindrical sections or parts 3 and 4, respectively. Theconfronting faces of these sections have outstanding flanges 5providedwith spiced almrn openings for t e rece t1on of Its 6 who areengaged by nuts. etween the confronting faces of the sections 3 and 4,outward of the cylindrical bore therethrough, there are packing strips7. The upper portion of the bore of the body is widened to receive thecoupling 2 therein, the lower portion of the bore being more restrictedto mugly receive end is provided with a round 0 the casing 1therethrough. -When the sections' 3 and 4 are clamped together by 4 thescrews 6 the compressib e strips 7 will estab lish a tight joint betweenthe improvement and the casing 1 and its coupling 2. The section 4 isprovided with a rectangular or nose extension 8 adjacent to its to andthe outer end of the nose portion 8 is cibsed by' a plate 9 thatcompresses against the nose a gasket 10 when the securing bolts 11 forthe Intel) are screwed home and into threaded o enings provided thereforin the nose 8. 0 head plate 9 has a central threaded openmg therethroughfor a screw 12 whose outer end is providedwithan operating wheel 13. Thescrew is received in the bore of the nose and the sections 3 and 4 thatcomprise the body of the improvement have an interior oove or slot 14whose upper and lower w are arranged in a line with those of the hollowportion 15 of the nose 8. The screw 12' has its inner end swivellysecured to an n standing flange 16 on a slidable valve pFate 17. Theplate 17 adjacent its outer and roun ning 18 and to the opposite sidesof the sai opening the upper face of the said plate has restricte andthreaded openings 19 therethro zgh. Designed to be arranged over the vve plate 17 there is an upper late 20 which corresponds in shape to t evalve plate. This plate 20, however, is held from movement through themedium of a bolt 23 that is screwed through an openin in the section 4and enters an opening in t e said plate 20. The plate 20 has a round 0therethrough of a size corres opening 18 but the sai opening is locateda eater distance away from the outer rounded end of the plate 20 than isthe opening 18, and there is screwed in this opening apipe 21. The plate20 is provided with a pair 0 aoed openings 22 designed to register withe openings 19 in the valve plate 1? when the valve plate is in oneposition and theseopenings are designed to have therethrough short bolts24 which are screwed into the openings 19 in the valve plate 17.

In order to handle the head the lower bolts 6 pass through eyes in bailmembers 25, the

Pemng ending to that of the ,7

, p ate may be adjusted to regulate the flow of the gas and oil throughthe opening 18 in the pipe 21. Should the well prove wild the screw 12is turned in an opposite direction to move the valve plate 17 to bringits opening 18 away from the pipe 21 and likewise bring the said valveplate to a position whereby its threaded openings 19 will aline with theopenings 22 in the plate 20 and thereafter the screws or bolts 24 areinserted to positively hold the plates associated and prevent thepassage .of oil or gas through the head. There is, of course, a tightfrictional engagement between the valve plate and the plate 20 as wellas between these plates and the walls of the groove 14 and the bore 15,with which they contact so that liability of gas or oil passing throughthe head will be effectively prevented.

It is thought the foregoing description will fully and clearly set forththe advantages and simplicity of my construction to those skilled in theart. so that further detailed description will not be required. ObviouslI do not wish to be restricted to the speci 0 structure herein shown anddescribed and, therefore, hold myself entitled to make such changestherefrom as fairly fall within the scope of what I claim.

Having described the invention, I claim 1. A control head comprising twomembers which have semi-cylindrical parts, and have outstanding flangesat their confronting ends, and compressible plates between the saidends, and means for forcin the flanges toward each other for sustaining1n the bore a well casing and a coupling therefor, one of said sectionshaving a nose extension which is hollow, a headplate closing the end ofthe nose, a hand operated screw threaded through the nose and enteringthe bore, the seml-cylindrical members having a groove alining with thewalls of the bore, a slidable plate having an opening therethroughreceived in the groove and in the bore and having a swivel connectionwith the screw, a plate received in the groove and bore and resting onthe valve 'mally the valve plate and in which 0 ening is ing ends, andcompressible plates between said ends and means for forcing the flangestoward each other for sustaining in the bore a well casing and acoupling therefor, one of said sections having a'nose extension which ishollow, a head plate closing the end of the nose, a hand operated screwthreaded through the nose and entering the bore, the semicylindricalmembers having a groove alining with the walls of the bore, a slidableplate having an opening therethrough received in the groove and in thebore and having a swivel connection with the screw, a plate received inthe groove and bore and resting on the valve plate and removably fixedto the head and having an opening therein norout of alinement with theopening in screwed an outlet pipe, and remova le means for locking theplate to the slidable valve plate when the openings in the said platesare out of registering alinement.

In testimony whereof I afiix my signature.

HERMAN KRATZER.

plate and removably fixed to the head and pipe.

2. A control head comprising two members which have semi-cylindricalparts and have outstanding flanges at then confronts

